When I leave my MacBook Air overnight to say do a Time Capsule, I see that it will log itself out unexpectedly and automatically. Kind of wierd, my MacBook Pro doesn’t do that. Some users are having the same issue with the Mac Mini and the only real diagnosis is:
Apple – Support – Discussions – [...]
MacBook Air unexpectedly logs out
September 18th, 2008 · No Comments · Geek
Tags: Instabilities·Mac Mini·Minor Ailments·Real Diagnosis·Software Crash·Support Discussions·Time Capsule·Type Utilities·Wierd